Large files uploaded to FTP randomly get corrupted


Hi, we upload large PSD files to our dreamhost servers on a regular basis for our clients to download. We upload via FTP using coreftp, and have been doing this for 4 years. All of a sudden we are having problems with files being corrupted at random. Only these large files 40-300MB are getting corrupted. We’ve tried two different computers and are currently using cuteFTP - which I doubt is the problem. Does anyone have any suggestions as to why this could be happening?

Thanks in advance